Nut-lock.



PATENTED JUNE 18 T. BOOTH. NUT LOOK.

APPLICATION FILED OUT. 15, 1906.

attain? o UNITED STATES THOMAS BOOTH, or BOISE, IDAHO.

NUT-LOCK..

Specification of Letters Patent.

Patented. June 18, 1907.

Application filed O be 15, 1906. Serial No- 339,005.

To LU whom, it may concern.-

Be it known that I, THOMAS Boo'rn, a citizen of the United States, residing at Boise, in

the county of Ada and State of Idaho, have invented certain new and useful Improvements in Nut-Locks, of which the following is a specification.

The. object of this invention is to provide a novel form of-bolt and nut therefor, together with peculiar and novel means for attaching the nut to the bolt and at the same timelocking the nut from likelihood of accidental displacement.

It is contemplated by the present invention to do away with'the threads such as are used at the present time upon bolts and nuts,

thereby cheapening the cost of construction of these parts, from the standpoint of manufacture, permitting of more ready applicati on, attachment and separation of theparts, and giving rise to other advantages which will be apparent upon the description hereinafter.

For a full understanding of the invention and'the merits thereof and also to acquire a knowledge of the details of construction of the means for effecting the result, reference is to be had to the following description. and accompanying drawings, in which:

Figure 1 is a perspective viewof a nut lock. embodying the invention, Fig. 2 is a vertical longitudinal sectional view, Fig. 3 is a detail perspective view of the locking key or wedge.

Corresponding and like parts are referred to in the followin description and indicated in all the views 0 the drawings by the same reference characters.

Specifically describin the invention, the numeral 1 designates h lholt of a form somewhat similar to that most commonly in use, but not provided with the usual threaded end portion. The nut 2 is adapted to fit over the end of thebolt oppositethat. provided with the head and the openingin the nut is unprovided witl the usual threads being smooth. l

It will'be obvious from the fore oin that the nut 2 's adapted. to be readily fitte over an end of the bolt'l, and the. end portion of the bolt adapted to receive the nut in the above manner isformed at opposite sides with transverse recesses or seats 3. The recesses orlseats'3 are adapted to receive the opposite side portions of a transverse locking key or wedge 4, which is utilized to secure the nut to the bolt. In other words describtion after the bolt 1 has been passed through the part or parts to which it is to be applied, the nut 2 is slipped'upon the free end of the bolt, said nut being provided on its outer side with spaced ooves or kerfs 5. The locking key or We ge 4 is now arranged so that the sides thereof enter the grooves 5 andby lateral movement of the key the sides will be forced into the recesses or seats 3 in the outer end portionof the bolt. Each side of the key 4 tapers-slightly and the outer edge walls of the recesses 3, as well as the inner edge portions of the'side's bearing against the bottom portions of the grooves or kerfs will have wedg'ing action whereby to very effectively hold the nut 2 against the part to which the bolt is applied and at the same time will prevent displacement of the nut. 'That is to say the key 4 not only performs the function of means for securing the nut to the bolt 1, but italso prevents any movement of the nut relatively to .the bolt by which. the nut'might possibly be accidentally displaced therefrom. The engagement of vents turning of the nut, as will be readily apparent. To prevent displacement of the key 4 after it has been arranged in operative position, an extremity of one ofthe sides of the key is reduced as shown at 6, so as to be readily bent laterally, to form a stop accomplishing the above result.

Having thus described the invention, what is claimed'as new is: jy I In combination, a bolt, a nut disposed thereon and provided with cows or kerfs in its outer side, thebolt belng formed with opposite recesses or seats on its nut receiving end, a longitudinally, tapering key of U form comprising sides arranged transversely to the bolt and engaging in the recesses. or seats thereof, the sides of. the key being also received in the grooves or kerfs in the outer side of thenut, and the outer end of one side of the key being reduced-laterally and bent to engage a side of the nut to form a stop to prevent accidental displacement of the key.

In testimony whereof 'I afiixmy signature in presence of two witnesse.

THOMAS BOOTH. [L. s.] Witnesses:

E. STANLEY, F.v J. GAnvnR.

ing in the practical operation of the inven portions of the sides, bearing against the outer the key 4 with the recesses 30f the bolt pre- 

